Remembering Marshal of the Air Force Arjan Singh as "an outstanding soldier and a diplomat who led from the front", Congress President Sonia Gandhi today said that he will always be a source of inspiration to the country. <br/><br/>Expressing her condolences, she said that Arjan Singh was an outstanding soldier and a diplomat who led from the front. She said that Singh will be particularly remembered for his successful operation tenure on the Burma Front during World War II." She added that the veteran was a jewel in the throne of the Armed Forces.